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Sci Pharm. 2012 Apr-Jun;80(2):447-56. doi: 10.3797/scipharm.1108-16. Epub 2012 Feb 8.

Protective Properties of Laggera alata Extract and its Principle Components Against d-Galactosamine-Injured Hepatocytes.

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Department of Pharmacy, College of Life Sciences, China Jiliang University, 310018 Hangzhou, China.


Laggera alata extract (LAE) was quantitatively analyzed, and its principle components isochlorogenic acids were isolated and authenticated. Protective properties of LAE were studied using a d-galactosamine (d-GalN)-induced injury model in neonatal rat hepatocytes and a d-GalN-induced acute liver damage model in mice. Meanwhile, the effect of isochlorogenic acids derived from LAE on d-GalN-induced hepatocyte injury were also measured in vitro. LAE at concentrations of 10-100 μg/ml significantly reduced cellular leakage of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) and improved cell viability. The isochlorogenic acids (4,5-O-dicaffeoylquinic acid, 3,5-O-dicaffeoylquinic acid and 3,4-O-dicaffeoylquinic acid) at concentrations of 1-100 μg/ml also remarkably improved viability of hepatocytes. The oral treatment of LAE at doses of 50, 100 and 200 mg/kg markedly reduced the serum AST and ALT activity of mice and resulted in significant recovery of hepatocytes in liver sections.


Hepatoprotective; Isochlorogenic acid; Laggera alata extract; d-Galactosamine

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